CN109469696B - Rotating shaft assembly of air pressure disc brake - Google Patents
Rotating shaft assembly of air pressure disc brake Download PDFInfo
- Publication number
- CN109469696B CN109469696B CN201811580474.2A CN201811580474A CN109469696B CN 109469696 B CN109469696 B CN 109469696B CN 201811580474 A CN201811580474 A CN 201811580474A CN 109469696 B CN109469696 B CN 109469696B
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- Prior art keywords
- central shaft
- rotating
- rotating cavity
- shaft
- cavity
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- 230000000149 penetrating effect Effects 0.000 claims description 5
- 230000020347 spindle assembly Effects 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 239000000463 material Substances 0.000 description 6
- 229910001018 Cast iron Inorganic materials 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000005192 partition Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/02—Braking members; Mounting thereof
- F16D65/04—Bands, shoes or pads; Pivots or supporting members therefor
- F16D65/092—Bands, shoes or pads; Pivots or supporting members therefor for axially-engaging brakes, e.g. disc brakes
- F16D65/095—Pivots or supporting members therefor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/14—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2121/00—Type of actuator operation force
- F16D2121/02—Fluid pressure
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
The invention provides a rotating shaft assembly of a pneumatic disc brake, and belongs to the technical field of automobile parts. It has solved the lower problem of production efficiency of current pivot assembly. The rotating shaft assembly of the air pressure disc brake comprises a support, a pressure arm and a fixed shaft, wherein the fixed shaft is fixed with the support, the pressure arm comprises a columnar rotating part, a first rotating cavity and a second rotating cavity which are eccentrically arranged are respectively arranged at two ends of the rotating part, the fixed shaft comprises a first central shaft and a second central shaft which are columnar, the first central shaft penetrates through the first rotating cavity, the second central shaft penetrates through the second rotating cavity, the first central shaft and the second central shaft are coaxially arranged, a separating part for separating the first rotating cavity from the second rotating cavity is arranged in the middle of the rotating part, and the first central shaft and the second central shaft are respectively arranged at two sides of the separating part, and the ends of the first central shaft and the second central shaft can respectively abut against two sides of the separating part. The rotating shaft assembly of the air pressure disc brake has the advantage of convenience in production.
Description
Technical Field
The invention belongs to the technical field of automobile parts, relates to a brake, and particularly relates to a rotating shaft assembly of a pneumatic disc brake.
Background
With the continuous development of urban traffic, various types of vehicles are designed to meet different demands of users, and brakes are always an extremely important component in automobiles. The floating caliper type radial disc brake is one of the brakes and is used for solving the problem that the axial disc brake cannot be spatially arranged in a rear axle. However, most of the existing brake calipers have complicated split structures, and the number of parts is large, so that the brake calipers are not beneficial to processing and assembly.
For this reason, a floating caliper type radial double-push rod air pressure disc brake is designed and applied for Chinese patent (its application number is 201710372746.9; its publication number is CN 107120368A), and the brake comprises a caliper body, a rotating shaft assembly, two friction blocks, a brake disc, a pressing plate and a bracket, wherein the caliper body is of an integrated structure, and the rotating shaft assembly comprises a pressure arm, a fulcrum cylinder, a reference seat, a return spring, an adjusting mechanism and the like. The brake is designed into an integrated structure with the caliper body, so that the number of parts for assembling parts in the existing split structure is reduced, and the brake is convenient to assemble.
In the above-mentioned pivot assembly of stopper, its pressure arm includes the rotation portion that is approximately cylindrical and outwards protrudes approximately columnar load-bearing portion from rotation portion one side, and the through-hole in the rotation portion sets up eccentrically, and wears to be equipped with a fulcrum cylinder in the through-hole, and pressure arm can rotate around fulcrum cylinder circumference. The pressure arm can not move radially in the use process through the arrangement of the support point cylinder, and the two ends of the pressure arm along the axial direction are respectively contacted with the support shoulder so as to prevent the axial movement of the support shoulder. However, the support is generally made of cast iron materials, so that the surface hardness of the contact part between the support shoulder and the pressure arm needs to be improved in order to ensure the wear resistance of the contact part, and the heat treatment process of the cast iron materials is complex, so that the production efficiency of the rotating shaft assembly is greatly reduced, and the production cost is high.
Disclosure of Invention
The invention aims to solve the problems in the prior art and provides a rotating shaft assembly of a pneumatic disc brake, and the technical problem to be solved is how to improve the production efficiency of the rotating shaft assembly.
The aim of the invention can be achieved by the following technical scheme:
the utility model provides a pivot assembly of atmospheric pressure disc brake, includes support, pressure arm and fixed axle, the fixed axle is fixed with the support, the pressure arm is including being columnar rotation portion, its characterized in that, rotation portion both ends have respectively and all eccentrically set up rotatory chamber one and rotatory chamber two, the fixed axle is including all being columnar center pin one and center pin two, center pin one wear to locate in the rotatory chamber one, center pin two wear to locate in the rotatory chamber two, just center pin one and center pin two coaxial settings, rotation portion middle part has the partition portion that separates above-mentioned rotatory chamber one and rotatory chamber two, center pin one and center pin two set up in the both sides of partition portion and center pin one and center pin two's tip can respectively with the both sides of partition portion offset.
In the rotating shaft assembly of the air pressure disc brake, the pressure arm is divided into the first rotating cavity and the second rotating cavity which are mutually independent through the separation part, the fixed shaft is divided into the first central shaft and the second central shaft which are coaxially arranged, and the first central shaft and the second central shaft are respectively penetrated into the first rotating cavity and the second rotating cavity, so that the pressure arm can still rotate circumferentially around the first central shaft and the second central shaft, and normal use requirements are met; meanwhile, the end parts of the first central shaft and the second central shaft are respectively propped against the two sides of the separation part, so that the axial limit of the pressure arm can be realized by the first central shaft and the second central shaft.
In the above-mentioned rotating shaft assembly of the air pressure disc brake, the pressure arm further includes a bearing portion located in the middle of the rotating portion and integrally connected with the rotating portion, the bearing portion divides the rotating portion into two parts, the first rotating cavity and the second rotating cavity are located at two sides of the bearing portion, and the side wall of the first rotating cavity close to the bearing portion and the side wall of the second rotating cavity close to the bearing portion are both recessed in the side face of the bearing portion. The side walls of the first rotating cavity and the second rotating cavity are recessed into the side surfaces of the bearing parts, so that the installation and the positioning of the first central shaft and the second central shaft can be facilitated, and the production efficiency of the rotating shaft assembly is improved.
In the above-mentioned rotating shaft assembly of the air pressure disc brake, the side portions at two ends of the rotating portion are concave and form the first rotating cavity and the second rotating cavity respectively, the side portion of the first central shaft is provided with a convex connecting portion I, the side portion of the second central shaft is provided with a convex connecting portion II, and the connecting portion I and the connecting portion respectively extend out from the openings of the first rotating cavity and the second rotating cavity and fix the first central shaft and the second central shaft with the bracket. The first rotating cavity and the second rotating cavity are designed to be concave cavities, so that the processing is convenient, the connection between the first central shaft and the second central shaft and the support is convenient, and the production efficiency of the rotating shaft assembly is improved.
In the rotating shaft assembly of the air pressure disc brake, the first rotating cavity and the second rotating cavity are columnar and coaxially arranged, and the cross sections of the first central shaft and the second central shaft are circular crowns. The cross sections of the first central shaft and the second central shaft are designed to be circular crowns, so that the side walls of the first central shaft and the first rotary cavity can be matched better, and the plane of the first central shaft can be connected with the bracket more conveniently.
In the above-mentioned rotating shaft assembly of the air pressure disc brake, bearing bushes are respectively arranged between the outer side of the first central shaft and the side wall of the first rotating cavity and between the outer side of the second central shaft and the side wall of the second rotating cavity. The friction force between the pressure arm and the fixed shaft is reduced by the arrangement of the bearing bush, and abrasion is reduced.
In the rotating shaft assembly of the air pressure disc brake, the cross sections of the bearing bushes are arc-shaped, and the bearing bushes are fixedly connected with the rotating part through a convex inserting part. The bearing bush is fixed on the pressure arm, so that the bearing bush is prevented from moving circumferentially, and the protection effect is ensured.
In the rotating shaft assembly of the air pressure disc brake, semicircular needle bearings and limiting plates capable of limiting the semicircular needle bearings are arranged between the outer side of the central shaft I and the side wall of the rotating cavity I and between the outer side of the central shaft II and the side wall of the rotating cavity II.
Compared with the prior art, the rotating shaft assembly of the air pressure disc brake divides the fixed shaft into the first central shaft and the second central shaft, not only can meet the requirement of the pressure arm rotating around the fixed shaft, but also can axially limit the pressure arm through the first central shaft and the second central shaft, and the heat treatment process is greatly simplified because the materials of the fixed shaft and the pressure arm are generally non-cast iron materials, and the production efficiency of the whole rotating shaft assembly is improved.
Drawings
Fig. 1 is a schematic structural view of a spindle assembly of the air pressure disc brake.
FIG. 2 is a schematic cross-sectional view of another perspective of a spindle assembly of the present air pressure disc brake.
Fig. 3 is an exploded view of the present air disc brake at the pressure arm of the spindle assembly.
Fig. 4 is a schematic cross-sectional view of another embodiment of a spindle assembly of the present pneumatic disc brake.
In the figure, 1, a bracket; 2. a rotating part; 3. a first rotating cavity; 4. a second rotating cavity; 5. a central shaft I; 6. a second central shaft; 7. a partition portion; 8. a force bearing part; 9. a first connecting part; 10. a second connecting part; 11. bearing bush; 12. semicircular needle roller bearings; 13. and a limiting plate.
Detailed Description
The following are specific embodiments of the present invention and the technical solutions of the present invention will be further described with reference to the accompanying drawings, but the present invention is not limited to these embodiments.
As shown in fig. 1, 2 and 3, the rotating shaft assembly of the air pressure disc brake comprises a bracket 1, a pressure arm and a fixed shaft. The fixed shaft is fixed with the bracket 1, the pressure arm comprises a cylindrical rotating part 2 and a bearing part 8 which is positioned in the middle of the rotating part 2 and is connected with the rotating part 2 into a whole, and the bearing part 8 divides the rotating part 2 into two parts.
Specifically, two ends of the rotating part 2 are respectively provided with a first rotating cavity 3 and a second rotating cavity 4 which are eccentrically arranged and are columnar, the first rotating cavity 3 and the second rotating cavity 4 are concavely formed from the side parts of the rotating part 2, and the outer ends of the first rotating cavity 3 and the second rotating cavity 4 are respectively extended to the end parts of the two ends of the rotating part 2. The first rotating cavity 3 and the second rotating cavity 4 are respectively positioned at two sides of the bearing part 8, and the side wall of the first rotating cavity 3, which is close to the bearing part 8, and the side wall of the second rotating cavity 4, which is close to the bearing part 8, are both recessed into the side surface of the bearing part 8. The fixed shaft comprises a first central shaft 5 and a second central shaft 6 which are both columnar, the first central shaft 5 is arranged in the first rotary cavity 3 in a penetrating mode, the second central shaft 6 is arranged in the second rotary cavity 4 in a penetrating mode, and the first central shaft 5 and the second central shaft 6 are coaxially arranged. The middle part of the rotating part 2 is provided with a separating part 7 for separating the first rotating cavity 3 from the second rotating cavity 4, the first central shaft 5 and the second central shaft 6 are respectively arranged on two sides of the separating part 7, and the end parts of the first central shaft 5 and the second central shaft 6 can respectively lean against two sides of the separating part 7.
In this embodiment, the first rotating cavity 3 and the second rotating cavity 4 are both columnar and coaxially arranged, the cross sections of the first central shaft 5 and the second central shaft 6 are both circular crowns, and the cylindrical surfaces outside the first central shaft 5 and the second central shaft 6 are respectively used for abutting against the side walls of the first rotating cavity 3 and the second rotating cavity 4.
The side of the side part of the first central shaft 5 is provided with a convex connecting part I9, the side of the side part of the second central shaft 6 is provided with a convex connecting part II 10, and the connecting part I9 and the connecting part II 10 respectively extend out from the openings of the side parts of the first rotating cavity 3 and the second rotating cavity 4 and respectively penetrate into a connecting hole I and a connecting hole II correspondingly arranged on the bracket 1, so that the first central shaft 5, the second central shaft 6 and the bracket 1 are fixed. Here, the first connecting portion 9 and the first central shaft 5 may be integrally formed, or may be separately formed, and similarly, the second connecting portion 10 and the second central shaft 6 may be integrally formed, or may be separately formed.
Bearing bushes 11 are arranged between the cylindrical surface on the outer side of the first central shaft 5 and the side wall of the first rotating cavity 3 and between the outer side of the second central shaft 6 and the side wall of the second rotating cavity 4. The cross sections of the two bearing bushes 11 are arc-shaped, and protruding inserting parts are arranged on one sides of the two bearing bushes 11 facing the rotating part 2, inserting holes are formed in the positions, corresponding to the inserting parts, of the rotating part 2, and the inserting parts are correspondingly inserted in the inserting holes so as to fixedly connect the bearing bushes 11 with the rotating part 2. As shown in fig. 4, according to need, both bearing bushes 11 may be replaced with semicircular needle bearings 12, and a limiting plate 13 capable of preventing the semicircular needle bearings 12 from rotating with the rotation of the pressure arm may be provided at both ends of the semicircular needle bearings 12.
In the rotating shaft assembly of the air pressure disc brake, the pressure arm is divided into the first rotating cavity 3 and the second rotating cavity 4 which are mutually independent through the separation part 7, the fixed shaft is divided into the first central shaft 5 and the second central shaft 6 which are coaxially arranged, and the first central shaft 5 and the second central shaft 6 are respectively arranged in the first rotating cavity 3 and the second rotating cavity 4 in a penetrating way, so that the pressure arm can still rotate circumferentially around the first central shaft 5 and the second central shaft 6, and normal use requirements are met; simultaneously, make center pin 5 and center pin two 6's tip respectively with the both sides of division 7 support, can realize the axial spacing to the pressure arm by center pin 5 and center pin two 6, because the material of fixed axle and pressure arm is non-cast iron material generally, heat treatment process is simplified greatly, has improved the production efficiency of whole pivot assembly.
The specific embodiments described herein are offered by way of example only to illustrate the spirit of the invention. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Claims (6)
1. The rotating shaft assembly of the air pressure disc brake comprises a bracket (1), a pressure arm and a fixed shaft, wherein the fixed shaft is fixed with the bracket (1), the pressure arm comprises a columnar rotating part (2), and is characterized in that two ends of the rotating part (2) are respectively provided with a first rotating cavity (3) and a second rotating cavity (4) which are eccentrically arranged, the fixed shaft comprises a first central shaft (5) and a second central shaft (6) which are columnar, the first central shaft (5) is arranged in the first rotating cavity (3) in a penetrating way, the second central shaft (6) is arranged in the second rotating cavity (4) in a penetrating way, the first central shaft (5) and the second central shaft (6) are coaxially arranged, the middle part of the rotating part (2) is provided with a separating part (7) for separating the first rotating cavity (3) and the second rotating cavity (4), the first central shaft (5) and the second central shaft (6) are respectively arranged at two sides of the separating part (7), the end parts of the first central shaft (5) and the second central shaft (6) can respectively abut against the pressure arm (8) and the middle part (8) to form a rotating part (8) which is a rotating part with the rotating part (2), the first rotating cavity (3) and the second rotating cavity (4) are respectively positioned on two sides of the bearing part (8), the side wall of the first rotating cavity (3) close to the bearing part (8) and the side wall of the second rotating cavity (4) close to the bearing part (8) are both concave on the side face of the bearing part (8).
2. The rotating shaft assembly of the air pressure disc brake according to claim 1, wherein the side parts of the two ends of the rotating part (2) are concave and respectively form the first rotating cavity (3) and the second rotating cavity (4), the side part of the first central shaft (5) is provided with a convex connecting part (9), the side part of the second central shaft (6) is provided with a convex connecting part (10), and the connecting part (9) and the connecting part (10) respectively extend out of the openings of the first rotating cavity (3) and the second rotating cavity (4) and fix the first central shaft (5) and the second central shaft (6) with the bracket (1).
3. The rotating shaft assembly of the air pressure disc brake according to claim 2, wherein the first rotating cavity (3) and the second rotating cavity (4) are columnar and coaxially arranged, and the cross sections of the first central shaft (5) and the second central shaft (6) are circular crowns.
4. The rotating shaft assembly of the air pressure disc brake according to claim 1, wherein bearing bushes (11) are arranged between the outer side of the first central shaft (5) and the side wall of the first rotating cavity (3) and between the outer side of the second central shaft (6) and the side wall of the second rotating cavity (4).
5. The spindle assembly of a pneumatic disc brake according to claim 4, wherein the bearing bushes (11) are circular in cross section and the bearing bushes (11) are fixedly connected with the rotating part (2) through a protruding plug-in part.
6. The rotating shaft assembly of the air pressure disc brake according to claim 1, wherein semicircular needle bearings (12) and limiting plates (13) capable of limiting the semicircular needle bearings (12) are arranged between the outer side of the central shaft I (5) and the side wall of the rotating cavity I (3) and between the outer side of the central shaft II (6) and the side wall of the rotating cavity II (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811580474.2A CN109469696B (en) | 2018-12-24 | 2018-12-24 | Rotating shaft assembly of air pressure disc brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811580474.2A CN109469696B (en) | 2018-12-24 | 2018-12-24 | Rotating shaft assembly of air pressure disc brake |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109469696A CN109469696A (en) | 2019-03-15 |
| CN109469696B true CN109469696B (en) | 2024-01-05 |
Family
ID=65676779
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811580474.2A Active CN109469696B (en) | 2018-12-24 | 2018-12-24 | Rotating shaft assembly of air pressure disc brake |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109469696B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101545515A (en) * | 2007-12-24 | 2009-09-30 | 英国美瑞特重型车制动系统有限公司 | Retaining formation |
| EP3112718A1 (en) * | 2015-07-01 | 2017-01-04 | KNORR-BREMSE Systeme für Nutzfahrzeuge GmbH | Bearing for a holding device of a disc brake and holding device of a disc brake |
| CN107076232A (en) * | 2014-09-17 | 2017-08-18 | 克诺尔商用车制动系统有限公司 | Disk brake for commercial car |
| CN107131235A (en) * | 2017-05-24 | 2017-09-05 | 武汉元丰汽车零部件有限公司 | It is applicable the pressure arm and rotating shaft assembly of radially double push rod air-pressure disc brakes |
| CN108626272A (en) * | 2018-07-16 | 2018-10-09 | 浙江国昌机械有限公司 | Air-pressure disc type brake clamps assembly |
| CN209309190U (en) * | 2018-12-24 | 2019-08-27 | 隆中控股集团股份有限公司 | A kind of rotating shaft assembly of air-pressure disc brake |
-
2018
- 2018-12-24 CN CN201811580474.2A patent/CN109469696B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101545515A (en) * | 2007-12-24 | 2009-09-30 | 英国美瑞特重型车制动系统有限公司 | Retaining formation |
| CN107076232A (en) * | 2014-09-17 | 2017-08-18 | 克诺尔商用车制动系统有限公司 | Disk brake for commercial car |
| EP3112718A1 (en) * | 2015-07-01 | 2017-01-04 | KNORR-BREMSE Systeme für Nutzfahrzeuge GmbH | Bearing for a holding device of a disc brake and holding device of a disc brake |
| CN107131235A (en) * | 2017-05-24 | 2017-09-05 | 武汉元丰汽车零部件有限公司 | It is applicable the pressure arm and rotating shaft assembly of radially double push rod air-pressure disc brakes |
| CN108626272A (en) * | 2018-07-16 | 2018-10-09 | 浙江国昌机械有限公司 | Air-pressure disc type brake clamps assembly |
| CN209309190U (en) * | 2018-12-24 | 2019-08-27 | 隆中控股集团股份有限公司 | A kind of rotating shaft assembly of air-pressure disc brake |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109469696A (en) | 2019-03-15 |
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